Description
Title:
Measurements of Lambda hyperon spin correlation in pp and pPb collisions at CMS
Abstract:
Spin correlations between hyperons provide a novel probe of spin-dependent particle production and hadronization in high energy collisions. This talk focuses on the first measurements of spin correlations for pairs of Lambda (anti-Lambda) particles in pp and pPb collisions at LHC energies. The Lambda and anti-Lambda pairs exhibit negative spin correlations which is most prominent at short-range. No significant positive short-range spin correlation is observed for Lambda + anti-Lambda pairs, in qualitative contrast to previous observation at lower collision energies. These results provide new constraints on models of hyperon-pair production and on the origin of spin correlations in hadronic collisions.
Brief introduction about the speaker:
Zhenyu Chen is a professor at Shandong University. He obtained his Ph.D. from Rice University in 2017 and subsequently worked as postdoctoral researcher at Rice University and Stony Brook University before joining Shandong University in 2019. His research focus on collectivity and polarization in heavy-ion collisions, with recent focus on small systems.
